145601

Properties

Appears in sequences

• Number of domino tilings of 4 X (n-1) board.at n=13A005178
• Number of perfect matchings in graph P_{12} X P_{n}.at n=4A028474
• Primes that are concatenations of k-th composite and k-th prime.at n=31A038532
• Triangle of primes associated with A083773.at n=17A083775
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, -1, 1), (0, 0, 1), (0, 1, 1), (1, 0, -1)}.at n=9A150473
• Array T(m,n) read by antidiagonals: number of domino tilings of the 2m X 2n grid (m>=0, n>=0).at n=38A187617
• Array T(m,n) read by antidiagonals: number of domino tilings of the 2m X 2n grid (m>=0, n>=0).at n=42A187617
• Triangle T(m,n) read by rows: number of domino tilings of the 2m X 2n grid (0 <= m <= n).at n=23A187618
• Third row of array in A187617.at n=6A188899
• Prime factors of generalized Fermat numbers of the form 6^(2^m) + 1 with m >= 0.at n=12A273947
• Lesser of twin primes for which phi(p-1) < phi(p+1).at n=32A286715
• Prime numbersat n=13473