34716

Appears in sequences

• Triangle of Lehmer-Comtet numbers of the first kind.at n=57A008296
• Even triangular numbers with prime indices.at n=29A034955
• McKay-Thompson series of class 28A for Monster.at n=37A058606
• Triangular numbers with sum of digits = 21.at n=22A068131
• Triangle, read by rows, where row n equals the inverse binomial of column n of square array A100324, which lists the self-convolutions of SHIFT(A003169).at n=29A100326
• Column 1 of triangle A100326, in which row n equals the inverse binomial of column n of square array A100324, with leading zero omitted.at n=6A100328
• Triangular numbers equal to the sum of a prime number with its index.at n=23A115886
• Triangular numbers for which the sum of the digits is an octagonal number.at n=25A117523
• a(1) = a(2) = 1. a(n) = a(n-1) + (largest nonprime {1 or composite} among the first n-2 terms of the sequence).at n=25A120760
• Even pseudoprimes to base 37.at n=23A130441
• Triangular numbers which are sums of 4 consecutive primes.at n=10A173420
• Imbalance of the sum of largest parts of all partitions of n.at n=38A194809
• Triangular arithmetic on half-squares: b(n)*(b(n) - 1)/2 where b(n) = floor(n^2/2).at n=23A227970
• Triangular numbers representable as b! + c^2.at n=33A230364
• Triangular numbers which have one or more occurrences of exactly five different digits.at n=23A241788
• Triangular numbers T such that sum of the factorials of digits of T is prime.at n=21A242831
• Triangular numbers n with digits d_1, d_2, ..., d_k such that d_1*(d_1+1)/2 + ... + d_k*(d_k+1)/2 is a triangular number.at n=32A254957
• The first of two consecutive triangular numbers the sum of which is equal to the sum of two consecutive prime numbers.at n=19A298462
• Partial sums of A299898.at n=40A299899
• Number of minimal total dominating sets in the (2n-1)-triangular snake graph.at n=18A308591