45280

Appears in sequences

• Numbers k such that 1*k + 1, 3*k + 1, 9*k + 1, 27*k + 1 are all primes.at n=33A112041
• Generating function = sum over all subsets S of the integers {0,1,2...} of 1/sum(1/x^n for n in S).at n=16A121268
• 60-gonal (hexacontagonal) numbers: a(n) = n(29n - 28).at n=40A249911
• Expansion of Product_{k>=1} 1/(1-x^(k+7))^k.at n=49A263363
• a(n) = 5*(n+1)*(9*n+4).at n=31A304507
• Number of semimagic quads squares that can be formed using cards from Quads-2^n deck, where the first row and column are fixed.at n=1A362963