26011

Appears in sequences

• Pentagonal pyramidal numbers: a(n) = n^2*(n+1)/2.at n=37A002411
• Number of ways in which n identical balls can be distributed among 7 boxes in a row such that each pair of adjacent boxes contains at least 4 balls.at n=9A005340
• Odd pentagonal pyramidal numbers.at n=9A015223
• Sum of terms of n-th row of A077583.at n=36A077660
• Sum of terms of n-th row of A077661.at n=36A077663
• Group the natural numbers such that the n-th group sum is divisible by the n-th triangular number: (1), (2, 3, 4), (5, 6, 7), (8, 9, 10, 11, 12), (13, 14, 15, 16, 17), (18, 19, 20, 21, 22, 23, 24), ... Sequence contains the group sum.at n=36A086500
• Numerator of sum of all matrix elements of N X N matrix M(i,j) = i^3+j^3, (i,j = 1..n) divided by n!.at n=36A099904
• Interlacing n^3/2 and n^2(n + 1)/2.at n=36A130656
• Minimal m > 0 such that Fibonacci(m) == 0 (mod n^3).at n=36A132633
• a(n) = (n+1)*(2n+1)^2.at n=18A139757
• (0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13,..) becomes (0^1*2, 3^2*2, 5^2*3, 7^2*3, 3^2*2, 5^11*2, 2^3*13,..).at n=23A143666
• Number of partitions of n minus number of divisors of n.at n=37A144300
• a(n) is the concatenation of the frequency of 0's, 1's, 2's etc. in the entries a(0) up to a(n-1).at n=5A174831
• a(n) = n^2 + 731*n + 1.at n=34A180919
• Maximum value of k^2 * (n-k).at n=56A190798
• Number of partitions p of n that do not include (min(p) + max(p))/2 as a part.at n=38A238481
• Indices of primes in the tribonacci-like sequence A214826.at n=12A242315
• a(n) = 19*n^2.at n=37A244631
• Composite numbers m such that tau_k(m) = m for some k, where tau_k is the k-th Piltz divisor function (A077592).at n=14A327774
• First lower diagonal of Parker's triangle A047812.at n=35A335323