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A076579 Triangular numbers which are 5-almost primes. 0
120, 300, 378, 496, 630, 780, 990, 1128, 1485, 1540, 1596, 2556, 2628, 2850, 3160, 3321, 3570, 3828, 4095, 4851, 5778, 5886, 6328, 6786, 7750, 8778, 9045, 9870, 10878, 11781, 12090, 13203, 13530, 14028, 14535, 14706, 15225, 16110, 16290 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

EXAMPLE

a(1)=120, 120 is a triangular number and 120=2*2*2*3*5 i.e. is a product of 5 prime factors so is 5-almost prime.

CROSSREFS

Sequence in context: A211467 A257712 A250607 * A345350 A121898 A048190

Adjacent sequences:  A076576 A076577 A076578 * A076580 A076581 A076582

KEYWORD

base,easy,nonn

AUTHOR

Shyam Sunder Gupta, Oct 19 2002

STATUS

approved

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Last modified May 27 11:47 EDT 2022. Contains 354097 sequences. (Running on oeis4.)