39974

Appears in sequences

• Sum of fourth powers: 0^4 + 1^4 + ... + n^4.at n=11A000538
• Let a(1) = 1, a(2) = 2, a(3) = 7, a(4) = 15 and for n >= 5 set a(n) = (n*b(n) - b(n-2)) / 2, where b(n) = 4*b(n-2) - b(n-4) for n >= 5 and b(1) = 1, b(2) = 2, b(3) = 5, b(4) = 8.at n=13A093652
• (1/30)*(p(p+1)(2p+1)(3p^2+3p-1)) where p is prime.at n=4A098997
• Number of simple labeled graphs on n+2 nodes with exactly n connected components that are trees or cycles.at n=22A215862
• Numbers k such that (7*10^k + 71)/3 is prime.at n=33A270831
• The difference between the number of partitions of 2n into odd parts (A000009) and the number of partitions of 2n into even parts (A035363).at n=40A282893
• a(n) = Sum_{1 <= j <= n/2, gcd(j,n)=1} j^4.at n=22A295576
• Numbers k such that k^2, (k+1)^2 and (k+2)^2 are all abundant numbers.at n=11A383391