Table 2: First 20 eigenvalues of transcendental equation (25) for this example.

Eigenvalue number

127.7412491590629
259.7215157304870
391.6538083942138
4123.5335630443243
5155.3754428957278
6187.1895966699011
7218.9827041355604
8250.7593126035128
9282.5226419505083
10314.2750529359010
11346.0183280786956
12377.7538469185017
13409.4826995869618
14441.2057629309977
15472.9237530699340
16504.6372626347768
17536.3467877607103
18568.0527480482156
19599.7555015887882
20631.4553564558279