20526

Appears in sequences

• Sums of groups in A075643.at n=31A075645
• Triangle read by rows: counts Motzkin paths by length of final descent.at n=58A098979
• Structured truncated icosahedral numbers.at n=10A100154
• Number of n X 3 nonnegative integer arrays with each row and column increasing from zero by 0, 1 or 2.at n=10A202807
• Indices of primes in the tribonacci-like sequence A214827.at n=29A242324
• a(n) = 3*p(n), where p(n) is the number of partitions of n.at n=31A299473
• Square array read by antidiagonals upwards in which row k has k as its first term and each subsequent term is the least possible value such that the sum of any 2 or more terms does not equal a prime.at n=62A305579
• Triangle read by rows. Convolution triangle of the Bell numbers.at n=59A357583