# Square Triangular Number | Perfect Square | Pentagonal Number

# Square Triangular & Pentagonal Number Calculator

An online square triangular and pentagonal number calculation.

## Square Triangular Number Formula

Square Triangular Number (N_{k}) = (1/32) × ( (17+12√2)^{k} + (17−12√2)^{k} − 2 )

## Pentagonal Number Formula

Pentagonal number (P_{n}) = (3n^{2} - n) / 2

# Square Triangular Number Generator up to 999

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