19451

Appears in sequences

• Number of partitions of n into 10 unordered relatively prime parts.at n=41A023030
• Numbers n such that 123*2^n-1 is prime.at n=29A050587
• Number of prime pairs below 10^n having a difference of 22.at n=6A093746
• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with every one adjacent to exactly 2 other ones.at n=17A153988
• Fibonacci-Chebyshev sequence depending on rabbit sequence A005614.at n=47A176741
• Index of the n-th 9 in the first occurrence of a string of exactly n 9's in the decimal expansion of Pi.at n=4A256160
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 670", based on the 5-celled von Neumann neighborhood.at n=33A289360
• Counterexamples to a conjecture of Ramanujan about congruences related to the partition function.at n=32A340757
• a(n) is the row of the Trithoff (tribonacci) array that contains the tails of the sequence which is n times the tribonacci numbers.at n=24A351685
• Number of integer partitions of n such that the maximum is greater than or equal to twice the median.at n=36A361859
• Zeroless analog of tribonacci numbers.at n=32A371911
• Number of compositions of n such that the odd parts are weakly increasing.at n=17A385604