150975

Appears in sequences

• Numbers k such that 8*10^k + 3 is prime.at n=9A103069
• Triangular numbers for which the number of divisors is also a triangular number.at n=32A116541
• Number of n X 5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=16A207596
• The first of two consecutive triangular numbers the sum of which is equal to the sum of two consecutive prime numbers.at n=35A298462
• G.f. satisfies: 1 = Sum_{n>=0} (1+x)^(n*(n-1)/2) / A(x)^n * 1/2^(n+1).at n=6A325286