384120

Appears in sequences

• a(0) = 0, a(1) = 4; for n > 1, a(n) = 10*a(n-1) - a(n-2).at n=6A122652
• Denominators of continued fraction convergents to sqrt(3/2).at n=11A142239
• Square root of floor(A055851(n)/6).at n=20A204519
• Primorial deflation of the n-th colossally abundant number: the unique integer k such that A108951(k) = A004490(n).at n=39A342012
• Square array, read by descending antidiagonals, where each row n comprises the integers w >= 1 such that A000037(n)*w^2+4 is a square.at n=39A378908