58141

Appears in sequences

• E.g.f. tan(x)*sinh(x)/2 (even powers only).at n=5A024272
• Centered square numbers that are also centered pentagonal numbers.at n=2A107075
• Number of second differences of arrays of length n + 2 of numbers in 0..4.at n=4A228214
• T(n,k)=Number of second differences of arrays of length n+2 of numbers in 0..k.at n=32A228218
• Number of second differences of arrays of length 7 of numbers in 0..n.at n=3A228222
• Total number of 2 X 2 squares appearing in the Thue-Morse sequence logical matrices (1, 0 version) after n stages.at n=10A241892
• Expansion of 1/(1 - x - Sum_{k>=2} floor(1/omega(k))*x^k), where omega(k) is the number of distinct prime factors (A001221).at n=17A280543
• Table read by rows: row n is the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A000217(n) and its long leg and hypotenuse are consecutive natural numbers, n >= 0.at n=56A384329