68902
domain: N
Appears in sequences
- a(n) = number of 8-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..71].at n=33A178879
- Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) - b(n-2) + 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=21A294562