decompwlj 3D

Numbers that are the sum of 12 consecutive primes

A127339 on the OEIS · family primes

Weight–level plate of Numbers that are the sum of 12 consecutive primes
Click the plate to explore it in 3-D. Weight k across, level L up, both on log scales: blue in the weight class (k ≤ L), orange in the level class (k > L). The dashed diagonal is k = L.
Open in the 3-D viewerA127339 on the OEIS
Terms100,000 (n = 1 … 100,000)
Decomposable (a > 2d)100,000
Level class, k > L38,995 · 38.99 %
Weight class, k ≤ L61,005 · 61.01 %
Ties, k = L1
On the level line L = 10
Forced level, l ≤ d²89
Range of a(n)197 … 15,597,530
Range of the jump d39 … 330
Largest weight k, level L7,797,631, 229,705

142 different gaps occur, from 39 to 330; the level share is 38.99 %.

The decomposition

Every term of a strictly increasing sequence is written a(n) = k(n)·L(n) + d(n): the jump d = a(n+1) − a(n), the weight k the least divisor of a − d greater than d, the level L = (a − d)/k. A term decomposes when a > 2d; it is in the level class when k > L and in the weight class when k ≤ L. See decompwlj.com and arXiv:0711.0865, or how it works, with worked examples and a live one.