A023567

[Jeremy Gardiner]

Sorry, I am probably being dim here, but please could someone explain how
A023567 is calculated?

Thanks,
Jeremy Gardiner

A023567  0,2,3,5,9,14,18,24,32,39,51,57,71,85,94,108,124,142,152,176,
Convolution of A023531 and primes.

A023531  1,0,1,0,0,1,0,0,0,1,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0
a(n) = 1 if n of form m(m+3)/2, otherwise 0.


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