24497

Appears in sequences

• Hexagonal pyramidal numbers, or greengrocer's numbers.at n=33A002412
• Odd hexagonal pyramidal numbers.at n=16A015225
• Small rhombicosidodecahedron with faces of centered polygons.at n=8A193251
• Sequence derived from arithmetic relations between powers of phi (A001622): a(n) = phi^n - (-1)^n * (n - phi^-n).at n=21A248924
• Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7.at n=19A252248
• a(n) = (-1)^n*(n + 1)*(5*n^2 + 10*n + 1).at n=16A271532
• Numbers k such that 8*10^k - 79 is prime.at n=22A294572
• G.f.: x * Product_{k>=1} 1/(1 - a(k)*x^k)^k.at n=7A308206
• a(n) = numerator of Sum_{d|n} (pod(d)/sigma(d))where pod(k) = the product of the divisors of k (A007955) and sigma(k) = the sum of the divisors of k (A000203).at n=17A324984