19061

Appears in sequences

• a(n) = round( Gamma(n+1/4)/Gamma(1/4) ).at n=9A020042
• Ceiling of Gamma(n+1/4)/Gamma(1/4).at n=9A020132
• a(n) = (d(n)-r(n))/2, where d = A026037 and r is the periodic sequence with fundamental period (1,0,0,1).at n=46A026038
• Numbers whose base-5 representation contains exactly three 1's and three 2's.at n=33A045232
• 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, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, -1)}.at n=10A148574
• Strobogrammatic cyclops numbers.at n=8A153806
• Numbers that are the same upside down (using only digits 0, 1, 6 and 9).at n=29A169731
• Sum of the sizes of the Durfee squares of all partitions of n that do not contain 1 as a part, but with a(1) = 1.at n=38A208474
• Strictly superdiagonal compositions: compositions (p1, p2, p3, ...) of n such that pi > i.at n=39A238874
• G.f. A(x) satisfies: A(x) = A(x^2 - x^3)/x.at n=28A273218
• Strobogrammatic nonpalindromic numbers.at n=25A287092
• Sum of the largest parts of the partitions of n into 10 squarefree parts.at n=45A326637
• Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes.at n=40A381030