# A176964 (b-file synthesized from sequence entry) 0 1 1 3 2 5 3 17 4 61 5 245 6 1021 7 4405 8 19453 9 87589 10 400541 11 1855493 12 8689213 13 41068965 14 195659357 15 938623045 16 4530198013 17 21982331237 18 107178047773 19 524805028357 20 2579684059581 21 12724878633765 22 62968424313821 23 312503657989317