A249679 Terms of A007504 divisible by 3.

0, 129, 381, 501, 639, 963, 1161, 1371, 1593, 1851, 2127, 2427, 3087, 3447, 3831, 4227, 5589, 6081, 6870, 10191, 10887, 12339, 13101, 13887, 14697, 15537, 16401, 17283, 18189, 19113, 22548, 23592, 25800, 26940, 28104, 30504, 31734, 35568, 36888, 38238, 39612, 41022, 42468, 46191

Offset: 1

Author

Zak Seidov, Nov 03 2014

Keywords

• nonn
• easy

Comments

Conjecture: a(n) ~ 4.5 n^2 log n. - Charles R Greathouse IV, Nov 03 2014

Examples

			a(2) = 129 = A007504(10), a(3) = 381 = A007504(16).
		

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Crossrefs

Intersection of A007504 and A008585. Cf. A007504, A008585, A024011, A045345, A128165, A189072.

Programs

PARI

print1(s=0); forprime(p=2,1e4,s+=p; if(s%3==0, print1(", "s))) \\ Charles R Greathouse IV, Nov 03 2014