51213

Appears in sequences

• a(n) = n*(2*n^2 - 3*n + 4)/3.at n=43A037235
• Concatenation of primitive Pythagorean triangles, sorted.at n=1A138043
• Number of nX5 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=6A298619
• Number of nX7 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=4A298621
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=59A298622
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=61A298622
• Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros.at n=21A362446
• Expansion of e.g.f. (1/x) * Series_Reversion( x * (1 - x) * exp(-3*x/(1 - x)) ).at n=4A380919